reverberation vs repercussion

reverberation and repercussion both are nouns.

Word	Noun	Adjective	Verb	Adverb
reverberation	Yes	No	No	No
repercussion	Yes	No	No	No

As nouns, reverberation and repercussion are synonyms defined as:

reverberation and repercussion: a remote or indirect consequence of some action

reverberation (noun)	repercussion (noun)
the repetition of a sound resulting from reflection of the sound waves	a movement back from an impact
a remote or indirect consequence of some action	a remote or indirect consequence of some action